Safety-valve.



No. 707,485. Patented Aug. I9, |902.

w. wlsHAnT & B. sEmEL.

SAFETY VALVE.

(Appl canon med oe. 25, 1901.) (N n M o d el.)

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WILLIAM VISIIAR'I AND BRUNO SEIDEL, OF CHICAGO, ILLINOIS, ASSIGNORS TOTHE ADAMS it l/VESTLAKE COMPANY, A CORPORATION OF ILLINOIS.

SAFETY-VALVE..

SPECIFICATION forming part of Letters PatentNo. 707,485, dated August19, 1902.

Application i'lled October 25,1901. Serial No. 79,968. (No model.)

To all whom zit Natgoo-Iwan.- which the piping of the system is designedto Be it known that we, WILLIAM IVISHART be connected, is an oscillatingvalve 12, held and BRUNO SEIDEL, citizens of the United to its seat by4a nut 12a and having a passage States, and residents of Chicago, countyof 13 therethrough, which when the valve 12 is 55 5 Cook, and State ofIllinois, haveinvented cer-V open is alined with the passage 14 in theniptain new and useful Improvements in Safetyple. The nipple is alsoprovided with a Valves, of which the following is a speeificaport 13,communicating with the passage 14, tion, and which are illustrated inthe accomand closing this port is a valve 14% havinga panying drawings,forming a part thereof. stem 15 extending through the port and pro- 6o:o This invention relates to .improvements in jecting into the passagein the nipple. rl"he valves, and has particular reference to antostem15, which has a tapered end, does not matic safety or vent valvesemployed with entirely fill the port 13, but is of such shapegas-generators, steam appliances, and other that passages are formedbetween it and the machines or apparatus utilizing or containing wall ofthe port in order to permit of the flow 65 15 gas, steam, and otherfluids under pressure. of gas past the same when the valve is moved Inthe use of valves of the character refrom its seat in case of excessgeneration ot' ferred to and which are opened'under excessgas in thetank after the valve 12 is closed. ive pressure against the resistanceofa spring, The valve 14. is normally closed by a spring weight, orother device for holding the valve 16, which encircles a stem 17,extending out- 7o zo normally closed danger is encountered by wardlyfromthe valve 14N, and reacts between reason of the tendency of the valvewhen the said valve and a cap 1S, screwed on the not moved from its seatfor a long time to bethreaded boss 19, surrounding the port 13u. comeset by corrosion or from other cause, The cap 18l1as an aperture 20,through which and this sometimes happens, rendering an exthe stem17reciprocates, and openings 21, 75 plosion possible when the vent-valvefails to leading to the atmosphere from the port 13 operate underabnormal pressure. The valve 12 is provided with a duct 21, The objectof this invention is to avoid the passing through one of the side wallsthereof danger referred to and to provide means and entering the passage13, and when the whereby at each operation ot' a part or advalve isclosed-that .is to say, when in the 8o 3o junct of the apparatus ormechanism with position illustrated in Fig. 2-this duct 2l"L which theventing-valve is employed, such as coincides with the passage in thenipple leadafeed-valve or other part frequently manipuing from thegeneratingtank, so that com lated, the valve is moved fromits seat,theremunicationwith the venting-port is estabby preventing its becomingset from disuse. lished through the said duct. The outer face 85 3 5 Theinvention consists in the combination of the other side Wall of thepassage in the and arrangement of parts hereinafter devalve 12 has arecess 22, into which the end scribed, and which is illustratedin theaccoinof the stem l5 seats itself when the valve 12 panying drawings, inwhichis open.

Figure 1 is avertical sect-ion of the nipple From the foregoing 'it willbe seen that 9o 4o of an acetylene-gas-generating tank, showwhenever thevalve 12 is turned to open or ing the valve partially in section forclosing close the passage in the nipple it will comein the passagetherethrough. Fig. 2 is a section contact with the tapered end of thestem 15, on the line 2.2 of Fig. l',`and Fig. 3 is a secprojecting intoits path, and tripping the stem tion on the line 3 3 of Figf2. Y movethe vent-valve from its seat, the end of 9 5 For convenienceinillustrating and describthe stem entering the recess 22 or the pasingthe invention we have shown the same sage 13 in the valve 12, dependingupon the applied to an acetylene-generating tank, a direction ofmovement of the valve, as soon use to which itis especially adapted,although as the valve has been turned to the limit of not restrictedthereto. its movement. roo 5o Located in the nipple 10, extending fromVe have shown the vent-valve located in the dome or top 11 of agenerating-tank and to the nipple of an acetylene-generating tank;

but it will be understood that it may be placed in any4 other convenientpart of the system, and while a rotary oscillating valve'for closing thepassage in the nipple or pipe and a reciprocating vent-Valve are shownit is obvious that other forms of valves may be substituted therefor andthe same results secured.

We claim as our inventionl. In an apparatusforgenerating or containing afluid under pressure, in combination, a normally closed relief-valve, amovable element independent of the valve and which is an essential partof the generating or other apparatus, and an operative connectionbetween the movable element and the valve whereby the said valve istripped at each operation of the movable element.

2. In an apparatus for generating or con tain` ing a fluid underpressure, in combination, a spring-closed relief-valve, a movableelement of the apparatus and'which is independent of the valve, and anadjunct of the valvein The path of and which is tripped by the movableelement duringits ordinary operation to move the valve from its seat.

3. The combination of a pipe or nipple, a port in the Wall thereof, avalve normally closing the port, a Valve in the pipe or nipple, andmeans tripped by the latter valve for moving the former from its seat.

4. The combination of a pipe or nipple, a port in the wall thereof, areciprocating valve normally closing 'the port, an oscillating valve inthe pipe or nipple, and means tripped by the oscillating valve formoving the reciprteating valve from its seat.

The combination of a pipe or nipple, a port in the Wall thereof,aspring-pressed valve normally closing the port, an oscillating valve inthe pipe or nipple, a passage in the oscillating valve leading to theport, and a stem projecting from the port-valve and which is tripped bythe oscillating valve to move the port-valve from its seat.

6. The combination of a pipe or nipple, a port in the wall thereof, aspring holding the valve normally closed, a stem projecting from thevalve and into the passage of the pipe, an oscillating valve in the pipeand which engages the stem to move the port-valve from its seat, apassage through the oscillating valve communicating with the port in thewall of the pipe, and a recess in the oscillating valve to receive theend of the valve-stem when the oscillating Valve is open.

7. In a generating-tank, the combination With a spring-closed blow-oifvalve, of a part movable in bringing the generator into servlice, andconnection between such valve and movable part for unseating the valveas such part is moved.

8. In a generating-tank, in combination, a valve controlling the throatof the tank, a blow-off port, and a spring-closed valve therefor, thecontrolling-valve being provided with a tripping adjunct engaging theblow off valve.

9. In an apparatus forgenerating or containing a fluid under pressure,in combination, a spring-closed relief-valve, a movable element oftheapparatus independent of the valve, and a valve-unseating trip in thepath of the movable element.

WILLIAM WISH ART. BRUNO SEIDEL.

l/Vitnesses:

JOHN A. MosHER, WM. S. HAMM.

